9 Official GATE PH Questions with Verified Solutions & Answer Keys
The number of fundamental vibrational modes of COz molecule is (A) four: 2 are Raman active and 2 are infrared active. (B) four : 1 is Raman active and 3 are infrared active. (C) t...
A pure rotational Raman spectrum of a linear diatomic molecule is recorded using electromagnetio radiation of frequency Ve. The frequency of two consecutive Stokes lines are (A) v....
The separation between the first Stokes and corresponding anti-Stokes lines of the rotational Raman spectrum in terms of the rotational constant, B is (A) 2B (B) 4B (C) 6B (D) 12B...
The far infrared rotational absorption spectrum of a diatomic molecule shows equidistant lines with spacing 20 cm*' . The position of the first Stokes line in the rotational Raman ...
The first Stokes line of a rotational Raman spectrum is observed at 12.96 cm-1. Considering the rigid rotor approximation, the rotational constant is given by...
The expression for the second overtone frequency in the vibrational absorption spectra of a diatomic molecule in terms of the harmonic frequency we and anharmonicity constant Xe is...
The spacing between two consecutive S-branch lines of the rotational Raman spectra of hydrogen gas is 243.2 cm 1. After excitation with a laser of wavelength 514.5 nm, the Stoke's ...
In a solid, a Raman line observed at 300 cm-1 has intensity of Stokes line four times that of the anti-Stokes line. The temperature of the sample is _______K. (Round off to the nea...
Raman spectrum of a molecule was recorded using a source of wavelength 5000 Å. The first Stokes line is observed at 5100 Å. The first anti-Stokes line will appear at a wavelength L...